Lateral spread of the atlas without fracture.
D000293:Adolescent; D001270:Cervical Atlas / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D016135:Spinal Dysraphism / Q000000981:diagnostic imaging